We stayed at the Embassy Suites a couple years ago. Loved it.
No complaints at all honestly. Nice size pools, great breakfast and managers cocktail hour. They had transportation to the parks back then (extremely nice drivers and movies while you ride), I'm sure they still do. We'd stay again for this trip but extended family are coming so a house worked out better for us.
I really like both brands of hotels though but have never stayed at the doubletree there.